Conduit split case expansion coupling

Details Conduit split case expansion coupling Conduit split case expansion coupling

1987-08-17

1988-06-07

Arola, Dave W.

Pipe joints or couplings

Temperature-responsive

285298, 285337, 285346, 285373, F16L 5500

Patent

active

047492155

ABSTRACT:
A split case expansion coupling for steel pipe conduit that is made in two identical half sections that fit over any given commercial steel pipe size with one pipe end fixed and with the other pipe end being free to expand or contract. The free end has a bolted split cup containing a packing seal. The casing body at the fixed end fits the outside diameter of the connecting pipe and is clamped tightly in place by means of bolted mating flanges containing a compressible gasket. The expansion coupling can be installed or removed without disturbing the contents of a pipe conduit and without any torch-cutting or welding being required on the pipe conduit.

REFERENCES:
patent: 603720 (1898-05-01), Avery
patent: 1334778 (1920-03-01), Mohan
patent: 1733072 (1929-10-01), Pierce
patent: 2450458 (1948-10-01), Thompson et al.
patent: 4648631 (1987-03-01), Bryant
patent: 4662658 (1987-05-01), Holowach et al.

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